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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

1489

when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

4 20920

can any one tell me the formula to select the thickness of wire selection according to ampere rating

2 2959

I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

MRF,

2 5799

what is the phase voltage and line voltage in 2 phase power supply?

EID Parry, IBM,

1 3140

why the protection turbo generators is most complex?

Infres, L&T,

1087

How to calcualte 1unit of current consumption?

Bhushan Power Steel, ITC Infotech,

3 19934

why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?

1066

A 100 kVA , 400 v/250 kv testing transformer has 8% leakage reactance and resistance on 100 KVA base . A cable has to be tested at 500 kv using the above transformer as a resonant transformer at 50 hz . if the charging current of the cable at 500 kv is 0.4 A find the series inductance required . Assume 2% resistance for the inductor to be used and the connecting leads . Neglect dielectric loss of hte cable . what will be the input voltage to the transformer ?

L&T,

3262

TYPE'S OF BREKAR ,WHAT IS TRANSFORMAR & SAFTY. STARTER DOL & STAR DELTA STARTER.

Amtek,

1680

How to improve the power factor from 0.8 to 0.98? Also tell me cost vs benefit analysis.

2 2893

If a motor of 30KW rating &200 mtrs distance from feeder give me the cable size selection calculation?

960

Can we use the Poly Phenly Sulphide instead of Poly Phenly Ether? Do clarify your opinion.

1 1991

how to calculate current in HT side when we having LT current

2 6102

Why does capacitor block dc supply?

Bhel,

5 6044


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Un-Answered Questions { Electrical Engineering }

How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....

1156


What are the causes of electrical faults?

218


On Which Pressure PRV is operated.

855


Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?

1426


How Can You Relate Power Engineering With Electrical Engineering?

269






how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

1105


State kirchoff voltage law?

257


what is ground fault in ACB?

1230


What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

1968


What is formula calculation size cable wire ?

1029


hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why

1073


what is the differebt between ac and dc fuse?

1391


Is vtg is controlled by the resistor? if else how much?

1223


i ha done my 10th with 71% ,ITI with 81% 11th with 75% 12th 43% apprentiship with 71% in SAT i secure 1390 ,TOEFL 27 i was refused four times and in all me interview visa officar told that i am not Qualify for study in USA but i completed my 12th yes i got low persentage in my 12th but i seen to much student they already got visa with them 3 or 4 backlocs so why they are refused me ?

2654


What mean by MLTP

2805